update CI config

.drone.yml

@@ -5,7 +5,7 @@ name: default
 
 steps:
   - name: build
-    image: python:2.7
+    image: python
     environment:
       PLATFORMIO_CI_SRC: "src"
     commands:
@@ -19,7 +19,8 @@ steps:
       api_key:
         from_secret: gitea_token
       base_url: https://dev.xd0.de
-      files: dist/*
+      files:
+        - .pio/build/lolin_d32_pro/*.bin
     when:
       event: tag